Timonium Falls is a waterfall in Lewis County, Washington, in the Cascades region, with a total height of about 75 feet. It lies about 31.5 miles east of Morton and roughly 54.9 miles west of Yakima as the crow flies.
At 75 feet it is on the modest side for Washington, where the typical waterfall with a recorded height stands around 82 feet; it ranks 498th of 941. The water comes down as a veiling waterfall, a thin sheet of water spread over the rock face, combined with a horsetail character.
The Cascades are a high volcanic range of snow-capped peaks, deep glacial valleys and dense conifer forest of Douglas fir, western hemlock and true firs, with abundant rain and snow on the western slopes. Basalt cliffs and lava flows give the region one of the highest concentrations of waterfalls in the country.
There are 180 recorded waterfalls in Lewis County. Timonium Creek Falls, a 75-foot cascade waterfall, is about 1 miles away. Upper Timonium Creek Falls, is about 1.2 miles away. Grouse Creek Falls, a 35-foot slide cascade waterfall, is about 1.3 miles away.
Timonium Falls is located at 46.4362° N, 121.6360° W. The listing is based on the World Waterfall Database, one of the sources compiled by the U.S. Geological Survey in its inventory of waterfalls and rapids of the conterminous United States. The exact position has not yet been verified on aerial imagery, so treat the map pin as approximate. Details on trails, parking and access have not been documented for this waterfall yet.